.st-top{position:sticky;top:0;z-index:20;border-bottom:1px solid var(--st-b);background:rgba(11,14,20,.92);backdrop-filter:blur(10px);padding:10px 14px;display:flex;gap:12px;align-items:center}
.st-nav{display:flex;gap:10px;flex-wrap:wrap;margin-left:auto}
.st-shell{max-width:var(--st-w);margin:0 auto;display:grid;grid-template-columns:250px 1fr;gap:14px;padding:14px}
.st-rail{position:sticky;top:64px;align-self:start;border:1px solid var(--st-b);border-radius:var(--st-r);padding:10px;background:rgba(255,255,255,.02);height:fit-content}
.st-main{min-width:0}
@media (max-width:900px){.st-shell{grid-template-columns:1fr}.st-rail{position:static}}